Perma Bitu Coat is a dark brown liquid, which turns black upon drying. It is used in waterproofing and protection of subsoil structures from termite chloride and sulphate attack.


  • Perma Bitu Coat is used for waterproofing all types of RCC, brickbat coba, asbestos cement sheets and zinc/aluminium sheets etc.
  • Perma Bitu Coat can be used for repairing the damaged bitumen felts, cracked stoneware drainage pipes.
  • As a damp proof course applied under the first layer of bricks or block work in the masonry.
  • As a waterproof coating externally applied on the basement walls, footings etc before back filling.
  • As an anti corrosive and anti-termite coating in all subsoil structures before back filling.
  • As a crack filler and repair waterproof coating on brickbat coba and on concrete roofs.


  • Perma Bitu Coat is water based and hence not messy like conventional bituminous products.
  • Perma Bitu Coat has high PH and hence more compatible with concrete.
  • No cleaning solvents are required and can be washed off with water when it is still wet.
  • Single component and easily brush applied.
  • Can be used on wet surfaces and during rainy season.


Perma Bitu Coat Primer:
  • Mix one volume of Perma Bitu Coat with four Volumes of water. One litre Perma Bitu Coat can prime 450 Sqft of area
Perma Bitu Coat Putty:
  • Mix one volume of Perma Bitu Coat with two volumes of quartz powder or silica flour.
Perma Bitu Coat Mortar:
  • Mix one volume of Perma Bitu Coat with three volumes of dry natural sand. One litre Perma Bitu Coat yields two litres of mortar.
    Waterproofing normal concrete and brick bat coba:
  • Clean the surface to remove all loose particles. Cracks if any on the surface can be suitably widened. Prime the widened cracks and fill them with Perma Bitu Coat Putty. If there are depressions and pot holes then prime the depressions with one coat of Perma Bitu Coat and fill and level the depressions and pot holes with Perma Bitu Coat Mortar. Brush apply Perma Bitu Coat on entire surface in two or three coats. Provide fibre glass of scrim fabric at junctions of vertical and horizontal surfaces.

  • Repairing damaged bituminous felts:
  • Cut to widen the cracks and cut out the de-bonded felt. Prime and fill the cracks with Perma Bitu Coat Putty and fill the de-bonded cut out areas with Perma Bitu Coat Mortar. Brush apply Perma Bitu Coat on the entire area in two coats.

  • Asbestos /Zinc /Aluminium Sheet roofing:
  • Provide scrim or fibre glass fabric at J. Bolts and junction of sheet over one coat of Perma Bitu Coat and then brush apply Perma Bitu Coat on the entire surface in two to three coats.

  • Cracked drainage pipes:
  • Brush apply Perma Bitu Coat on the cracked pipe. When the first coat is still wet wrap glass / scrim fabric around the pipe and apply second coat of Perma Bitu Coat on the fabric.

  • Damp proof course:
  • On the cleaned plinth apply two coats of Perma Bitu Coat. The second coat applied after about four hours of first coat. When the second coat is still wet blind it with clean sharp sand to provide mechanical key.

  • Concealed water and drainage pipes:
  • It is a good idea to coat all concealed water and drainage pipes with Perma Bitu Coat to protect concrete from damage due to leakages. Apply one coat of Perma Bitu Coat on the pipe and wrap it with fibre mesh and apply second coat of Perma Bitu Coat and back fill.

  • Subsoil Structures:
  • Subsoil structures though main load bearing, in majority of the cases are subjected to water pressure along with termite chloride and sulphate attack. Hence before back filling all subsoil structures such as basement walls, footings etc should be coated with two coats of Perma Bitu Coat before back filling.

  • Anti-termite treatment:
  • Coating of Perma Bitu Coat applied on to the footings and columns up to ground level serves as highly effective anti-termite treatment. Most often when conventional anti-termite treatments fail, Perma Bitu Coat gives permanent anti termite protection. Two coats of Perma Bitu Coat applied over Perma Bitu Coat primer serves as very effective anti-termite treatment.


Form : Dark Brown Liquid

Specific Gravity : 1.03 ± at 25°C

Ph : 10

Service Temperature : -30°C to 80°C

Application Temperature : +5°C to 50°C


1 kg of Perma Bitu Coat covers an area of 35 to 45 sqft per coat depending upon the surface.


Perma Bitu Coat is available in 500 gms, 1 kg & 10 kg packs.


Perma Bitu Coat has a shelf life of 24 months if stored in manufacturer’s original packing in a cool and dry place away from moisture and heat.


PERMA warrants that all products are free from any defects of manufacture and comply with the specifications given in their respective technical data sheet. No warranty can be given as to the results of use because conditions of use, such as site conditions, surface preparations, workmanship, weather, structural issues and other factors are beyond the control of PERMA. Purchaser agrees to seek the advice of qualified professionals to carry out tests & take trials to determine the suitability of products for their intended purpose prior to full scale usage of PERMA products and assumes all risks.

The company does not assume any liability for unsatisfactory results, arising from the use of our products. Purchaser’s sole liability is limited to replacement of product or refund of the purchase price paid if any product proven defective. No other warranties, express or implied, shall apply including any warranty of merchantability or fitness for a particular purpose. PERMA shall not be liable for any consequential damages arising from the use of our products for unsatisfactory results.

The information supplied in this datasheet is based on our experience through extensive research and is given in good faith in order to help prospective users. We reserve the right to update the information provided in our technical data sheet at any time without prior notice within the scope of technical progress or new developments.


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